Exhaust-muffler.



J. HALL.

EXHAUST MUFFLER.

APPLICATION FILED 11012119104 1,023,644. Patented Apr. 16, 1912.

izz/enfar. Minessas 7V4 gg 777M amww w JOSEPH HALL, OF MANCHESTER,ENGLAND.

EXHAUST-MUFFLER.

Specification of Letters Patent.

Patented Apr. 16, 1912.

Application filed November 22, 1910. Serial No. 593,743.

To all whom it may concern:

Be it known that I, JGSEPH HALL, a subject of Great Britain, residing atManchester, in the county of Lancaster, England, Kingdom of GreatBritain, have invented new and useful Improvements in Exhaust- Mufiiers,of which the following is a specification.

My invention relates to improvements in exhaust mufflers such as areemployed for silencing the noise contained in the exhaust gases whencoming from oil, gas and the like motors and the object is to provide aconstruction of exhaust muflier which is more efficient than thosehitherto in use and can be readily taken to pieces for cleansingpurposes. I attain these objects by the mechanism illustrated in theaccompanying drawing, in which igure 1 is a longitudinal section andFig. 2 an end view of an exhaust mutiler constructed in accordance withmy invention.

Similar letters refer to similar partsthe outlet end of the body orshell a I construct a collar 0 on the outside of the body a and on theinside of the said collar, I fix an outlet end plate 0!, held inposition up against the outlet end of the body, by two taper pins 0 tomake a tight joint. At, or about the center of the said body, or shell,I fix internally what I call a bafiie head piece 9 having three (ormore) perforated aflie plates h, i, k, erforated with holes Z (for thepassage of t e exhaust gases) and to break up the volume of the saidexhaust gases when passing through the batlle plate. This baflie headpiece and perforated battle plates are fixed onto the end of the centraltube f that projects through the aforesaid outlet end plate d to orabout the center of the body a. This said end plate carries the centraltube and battle head piece and forms four separate chambers m, n, 0, p,two inside of the said body or shell, and two on the outside of thecentral tube 1. By taking out the taper pins, the outlet end plate d andcentral tube f and battle head piece 9 can be withdrawn for cleansingpurposes.

The exhaust mulfler described operates as follows: Fig.1 shows by thearrows (two cycle), the line of flow of the said exhaust gases whenpassing through the exhaust muffler. It is in this cycle of operationthat the silencing takes place. First, the exhaust gases enter thereceiver No. 1. Here considerable expansion takes place, the gasesstriking the outside of the baflie head piece 9. Second, then passing onto the bathe plates 12, z, k the gases here pass through theperforations (holes Z.) in the bafiie plate It, i, k and the two smallchambers m, n breaking up the volume of the gases into -jets andsilences the noise. Third, the exhaust gases then-pass into the receiverNo. 2, here considerable expansion takes place again in the secondinstance, striking the end of the outlet end plate d, here the gasesmake the first turn. This completes the first cycle, as shown by thearrows. Fourth, the exhaust gases then enter into the second series ofperforations (holes) Z in the battle plates is, 2', h and then passthrough the two small chambers 0, 7) into the small receiver No. 3inside the bafiie head piece 9 expanded again for the third time. Herethe exhaust gases make the second turn and performing the two 0 cle. Thegases then pass along through t e central tube f as shown by the arrows,out of the muflier.

I claim:

In an exhaust muflier, a cylindrical receptacle having an 0 on end and ahole provided end, a lid 0 osing the said open end, taper pins holdinthe said lid in position, a tube passing t rough the center of the saidlid into the said receptacle, disks in the said receptacle secured tothe said tube, two rows of holes in the said disks,

an annular projection between the said rows of holes on each of the saiddisks, a name to this specification in the presence of hollow bafliehead-piece in the said receptwo subscribing witnesses. tacle and securedto the said tube, and two rows of holes in the said baffle head-piece,JOSEPH HALL 5 all substantially as and for the purpose set Witnesses:

fcrth.

THOMAS COLLINGE, In testimony whereof I have signed my GEORGE KNOWLES.

